| 1 |
Speed of light through glass is about. |
- A. 300000 km /s
- B. 250000 km/s
- C. 225000 km /s
- D. 200000 km/s
|
| 2 |
Heating of solid potassium chlorate produces a gas. |
- A. Chlorine
- B. Carbon dioxide
- C. Carbon mono oxide
- D. Oxygen
|
| 3 |
The SI unit of voltage is. |
- A. Watt
- B. Joule
- C. Coulomb
- D. Volt
|
| 4 |
Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980 |
- A. 100
- B. 200
- C. 300
- D. 400
|
| 5 |
A non - metal |
|
| 6 |
Law of conservation of mass put forward in. |
- A. 1783
- B. 1784
- C. 1785
- D. 1786
|
| 7 |
A relationship where two species live together closely is called |
- A. Symbiosis
- B. Predation
- C. Competitor
- D. None of these
|
| 8 |
The best material to be used as a core in the coils for making electromagnet is. |
- A. Rubber
- B. Plastic
- C. Soft Iron
- D. Steel
|
| 9 |
Metals have .......... melting and boiling point. |
- A. Low
- B. High
- C. Very low
- D. Normal
|
| 10 |
To make bioplastic, we heat the solution. |
- A. 70 oC
- B. 75 oC
- C. 80 oC
- D. 85 oC
|